LED vs. CFL Bulbs: Which Is More Energy-Efficient?
Energy-Efficient Lightbulbs May Have Dark Side When It Comes To Health : Shots - Health News : NPR
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Ultra energy-efficient LED with 50-year lifespan set to hit shelves
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The Original Groovy Light energy saving bulb
Energy efficiency – Replace lamps with more energy efficient ones
CFL vs. LED: an illuminating look at energy-efficient light bulbs | Advanced Insurance Solutions in Hershey, PA
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The Best Energy-efficient Light Bulbs for Your Home
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Making the World a Better Place with Energy Efficient Lighting
